> The primary purpose of the Cloudflare DNS Proxy is to act as a reverse proxy that sits between your website visitors and your origin server. When enabled, Cloudflare intercepts incoming web traffic, processes it, and shields your server from direct connections.

Maybe you are not up to date on latest trends, but modern CDN purpose is to shield the origin from the public writ large.

There is more to a public web service's digital attack surface than what it looks like in a browser. Correlating and using breached passwords from someone's unrelated accounts to their self-hosted service login portals, for example.

That's the marketing pitch of cloudflare, yes. That doesn't mean that it's a good idea, it means that they'd like it to be.